Title :
Modulation instability induced resonant four-wave mixing in WDM systems
Author :
Grosz, D.F. ; Mazzali, C. ; Celaschi, S. ; Paradisi, A. ; Fragnito, H.L.
Author_Institution :
Inst. de Fisica Gleb Wataghin, Univ. Estadual de Campinas, Sao Paulo, Brazil
fDate :
3/1/1999 12:00:00 AM
Abstract :
We present an experimental observation of modulation instability (MI) impairments on a two-channel wavelength-division-multiplexed (WDM) system at 2.5 Gb/s per channel repeaterless link comprising 100 km of dispersion shifted fiber. When the channel spacing is close to the modulation instability frequency, channel depletion due to four-wave-mixing (FWM) interactions is resonantly enhanced and becomes the main source of system performance degradation. Numerical simulations agree well with the experiment and confirm that this effect dominates over the well known effect of MI amplification of noise. We discuss the influence of MI-induced resonant FWM as a function of channel spacing on WDM systems operating in the anomalous dispersion regime.
Keywords :
digital communication; multiwave mixing; optical fibre communication; optical modulation; resonance; stability; wavelength division multiplexing; 100 km; 2.5 Gbit/s; anomalous dispersion regime; channel depletion; channel spacing; dispersion shifted fiber; modulation instability impairments; modulation instability induced multiwave mixing; repeaterless link; resonant four-wave mixing; system performance degradation; two-channel WDM system; wavelength-division-multiplexed system; Channel spacing; Degradation; Four-wave mixing; Frequency modulation; Optical fiber communication; Optical fiber dispersion; Optical noise; Resonance; Signal to noise ratio; Wavelength division multiplexing;
Journal_Title :
Photonics Technology Letters, IEEE
